Intel 386 User Manual
Page 651
Intel386™ EX EMBEDDED MICROPROCESSOR USER’S MANUAL
E-14
Full displacement
0 0 0 0 1 1 1 1
1 0 0 0 1 1 0 1
Full displacement
7 + m or
3
7 + m or
3
r
JLE/JNG = jump on less or equal/not greater
8-bit displacement
0 1 1 1 1 1 1 0
8-bit displacement
7 + m or
3
7 + m or
3
r
Full displacement
0 0 0 0 1 1 1 1
1 0 0 0 1 1 1 0
Full displacement
7 + m or
3
7 + m or
3
r
JNLE/JG = jump on not less or equal/greater
8-bit displacement
0 1 1 1 1 1 1 1
8-bit displacement
7 + m or
3
7 + m or
3
r
Full displacement
0 0 0 0 1 1 1 1
1 0 0 0 1 1 1 1
Full displacement
7 + m or
3
7 + m or
3
r
JCXZ = jump on CX zero
1 1 1 0 0 0 1 1
8-bit displacement
9 + m or
5
9 + m or
5
r
JECXZ = jump on ECX
zero
1 1 1 0 0 0 1 1
8-bit displacement
9 + m or
5
9 + m or
5
r
(Address size prefix differentiates JCXZ from JECXZ)
LOOP = loop CX times
1 1 1 0 0 0 1 0
8-bit displacement
11 + m
11 + m
r
LOOPZ/LOOPE = loop
with zero/equal
1 1 1 0 0 0 0 1
8-bit displacement
11 + m
11 + m
r
LOOPNZ/LOOPNE =
loop while not zero
1 1 1 0 0 0 0 0
8-bit displacement
11 + m
11 + m
r
CONDITIONAL BYTE SET
(Note: Times are register/memory)
SETO = set byte on overflow
to register/memory
0 0 0 0 1 1 1 1
1 0 0 1 0 0 0 0
mod 0 0 0 r/m
4/5*
4/5*
h
SETNO = set byte on not overflow
to register/memory
0 0 0 0 1 1 1 1
1 0 0 1 0 0 0 1
mod 0 0 0 r/m
4/5*
4/5*
h
SETB/SETNAE = set byte on below/not above or equal
to register/memory
0 0 0 0 1 1 1 1
1 0 0 1 0 0 1 0
mod 0 0 0 r/m
4/5*
4/5*
h
SETNB = set byte on below/above or equal
to register/memory
0 0 0 0 1 1 1 1
1 0 0 1 0 0 1 1
mod 0 0 0 r/m
4/5*
4/5*
h
SETE/SETZ = set byte on equal/zero
to register/memory
0 0 0 0 1 1 1 1
1 0 0 1 0 1 0 0
mod 0 0 0 r/m
4/5*
4/5*
h
SETNE/SETNZ = set byte on not equal/not zero
to register/memory
0 0 0 0 1 1 1 1
1 0 0 1 0 1 0 1
mod 0 0 0 r/m
4/5*
4/5*
h
Table E-1. Instruction Set Summary (Sheet 13 of 19)
Instruction
Format
Clock Count
Notes
Real
Ad-
dress
Mode
or
Virtual
8086
Mode
Pro-
tected
Virtual
Ad-
dress
Mode
Real
Ad-
dress
Mode
or
Virtual
8086
Mode
Pro-
tected
Virtual
Ad-
dress
Mode